NDLI: Radio wave propagation effects produced by chemical releases in the ionosphere

Content Provider	Springer Nature Link
Author	Hu, Yaogai Zhao, Zhengyu Xiang, Wei
Copyright Year	2011
Abstract	As an effective means to actively modify the ionosphere, chemical release can produce artificial ionospheric holes as a consequence of ionization depletion, which can greatly impact on radio wave propagation. In this paper, on the basis of the pre-study results on ionospheric disturbances produced by some representative chemical releases, the radio waves propagation effects of ionospheric holes that are produced by two different release species, water (H$_{2}$O) and sulfur hexafluoride (SF$_{6}$), had been investigated and simulated by the three-dimensional (3-D) numerical ray tracing. The results show that ➀ the appearance of various artificial ionospheric holes can lead to certain decrease of critical frequency in the ionosphere, and ➁ when the wave frequency exceeds the critical frequency, the rays should be multiple reflections or penetrate through the ionospheric hole and focus afterwards with the focus altitude elevated for higher frequencies. This work may provide the necessary theoretical support for chemical release experiments and the evaluation of radio wave propagation effects.
Starting Page	249
Ending Page	254
Page Count	6
File Format	PDF
ISSN	10071202
Journal	Wuhan University Journal of Natural Sciences
Volume Number	16
Issue Number	3
e-ISSN	19934998
Language	English
Publisher	Wuhan University
Publisher Date	2011-06-01
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	chemical releases ionospheric hole ray tracing radio wave propagation Computer Science Mathematics Life Sciences Physics
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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